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3512 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 3512
기능 PC POWER SUPPLY SUPERVISORS
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3512 데이터시트, 핀배열, 회로
UNISONIC TECHNOLOGIES CO., LTD
3512
PC POWER SUPPLY
SUPERVISORS
CMOS IC
DESCRIPTION
The UTC 3512 is specially designed for switching power supply
system. It provides over-voltage protection, over-current protection,
under-voltage protection, on/off control and power good signal
generating.
OVP/UVP (Over/Under-Voltage Protection) monitors 3.3V, 5V
and double 12V to protect our power supply and PC, FPO goes to
high when one of these supply voltages exceeds their normal
operation voltage range.
OCP (Over Current Protection) monitors IS33, IS5, IS12 input
current. The voltage difference across external current shunt is
used for OCP functions. An external resistor which is connected
between the RI pin and the GND pin can be used to adjust
protection threshold. To achieve better immunity for lighting surge
glitch and to prevent accidental power shut down during dynamic
loading condition, the de-bounce time for UVP/OCP is 73us
respectively. The deglitch time for OVP is 73uS for better noise
immunity.
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The power supply is turned on after 38mS de-bounce time when
PSON signal is set from high to low. To turn off power supply,
PSON signal is set from low to high and the de-bounce time is
115mS. When PGI input voltage level is lower than the internal
1.15V reference voltage, after 73uS de-bounce time, the PGO
signal is pulled low.
FEATURES
* Over/Under-voltage protection for 3.3V, 5V, and two 12V
* Over-current protection for 3.3V, 5V, and two 12V
* PGO and FPO pins with open drain output stage
* 300mS power good delay from PGI to PGO
* 75mS delay for 3.3V, 5V and 12V power turn on
* 2.8mS delay for PSON control to FPO turn off
* 38mS / 115mS PSON on/off de-bounce time
* 73uS width noise deglitches
* 73uS de-bounce time for UVP and OCP
* Wide supply voltage range
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
3512-D14-T
3512L-D14-T
3512-S14-R
3512L-S14-R
3512-S14-T
3512L-S14-T
Package
DIP-14
SOP-14
SOP-14
DIP-14
SOP-14
*Pb-free plating product number: 3512L
Packing
Tube
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
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QW-R502-073,A




3512 pdf, 반도체, 판매, 대치품
3512
BLOCK DIAGRAM
PSON
PWR
38ms /115ms
debounce
VS33
VS 5
VS12A
VS12 B
+-UN
-
+OV
+-UN
-
+OV
+-UN
-
+OV
-
+UN
-
+OV
PGI
IS 33
IS 5
IS 12
VREF
-
+UN
V12A
-
+
IREF×8
V12A
-
+
IREF×8
V12A
-
+
V12A
-
+
IREF×8
CMOS IC
Power On Reset
2.4 ms
Clrdelay
RST
Clr
75ms
delay
PWR
Bandgap
Reference
VREF=1.15 V
RST
73µs
debounce
RST
73µs
debounce
R
SQ
300ms
clr delay
FPO
PGO
VREF=1.15 V
+
-
I REF=VREF/ RI
RI
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-073,A

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3512 전자부품, 판매, 대치품
3512
TYPICAL APPLICATION CIRCUIT
12V
12V
System Side
5V
PGI
PSON
UTC 3512
1 PGI
2
3
4
GND
FPO
PSON
5
6
7
IS12
RI
VS12B
PGO
V DD
VS5
VS33
V S12
IS33
IS5
14
13
12
11
10
9
8
VSB
CMOS IC
Power Supply
Output Side
12V
12V
5V
3.3V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-073,A

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휴대전화 : 010-3582-2743


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351-10-116-00-003

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351-10-116-00-004

PCB connectors 2.54 mm Single row / double row Solder tail

Precid-Dip Durtal SA
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